post message to users inbox in facebook

I am integrating facebook social plugin into our web site. I follow This guide line. But one of my requirement is that I should be able to post message to user’s inbox not to wall. Is it possible JavascriptSDK and GraphAPI?

Thanks.

Facebook does not permit you to send messages to a user's inbox. As a result, there is a read_messages permission, but no send_messages.

Aslong as you application is verified by Facebook the users proxy email address should send all email messages to there inbox

You may also need the 'email' privileged but asking the user to allow the application to send emails.